Improvement in wrenches



[UNITED STATES PATENT QFFIGE.

Lonnie. coES, orrwoncn'srnn, MASSACHUSETTS.

iMPRovEM ENT IN WRENCHES.

Specification forming part of Letters Patent No. 87,5117, dated Marchi), 1869.v

To all whom 'it may concern:

Be it known that I, LORING GOES, of Worcester, in the State of Massachusetts, have invented a new and useful Improvement in the Construction of Monkey-Wrenches; and that the following is a full, clear, andv eXact description and specication of' my invention.`

The object of t my invention is to enable the lower bearing of the screw of the movable jaw to be secured to the shank of the fixed jaw at a small cost and efficiently.

To this end myinvention consists ofthe combination of the ferrule that carries the screwbearn g with the shank ofthe fixed jaw by mean s of a projection on said ferrule and a corresponding projection upon said shank, in such man ner that when the said ferrule is applied to the said shank the movement of the screw-bearing along the shank in the direction of the length of the screw is prevented by the said projections. e

My invention consists, further, of the combination of the said ferrule, the shank, and the projections on the ferrule and shank with the handle that Surrounds said shank, in such manner that the said handle, when in place, prevents the disengagement of the said projections.

My invention may be embodied in several Ways, and the monkey-wrench represented in Figs. 1, 2, 3, and 4L of the drawings is an eX- ample of one mode of carrying my invention into practical effect- Figure 1 being a side view of said monkeywrench; Fig. 2 being a longitudinal section of a part of it; and Figs. 3 and 4 representing sections of it at the lines x av and y y of Fig. 2.

e The said monkey-wrench has aiixed jaw, A, projecting from a stem, B, which terminates in the shank C, to which the Wooden handle D is secured. The movable jaw A' is constructed to slide upon the stem B of the, fixed jaw in the usual manner, and is moved by a screw, E, whose lower end is supported by the bearing f. This bearingprojects from a ferrule, G, whose interior'is constructed with a projection, e.

llhe shank() also is constructedwith a projection, r, forming the lower shoulder of a notch in the shank G. The space between the inside of the projection e and the insideof the opposite side of the ferrule G is at least as great as the size of any part of the shank between the ferrule and the extreme end of the shank, so that the ferrule may be slipped over the projection r of the shank.

When the ferrule is thus engaged, the ferrule may be rocked slightly to cause the face of its projection e to bear against the adjacent face of the shank, and be thus inside of the outside of the projection r of the shank'. Then a filling-piece, s, is inserted between the pro-- jection e of the ferrule and the projection rof the shankG, so that the endwise pressure of the screw is transmitted from the projection of the ferrule to that of the shank, and the ferrule is prevented from being shoved 0E the shank by the pressure oi' the screw E.

When the ferrule is thus in place it and the vfilling-piece may be prevented from disengaging by mean-s of the handle D, which, for this purpose, is constructed with its inner end, l',

of the right size to enter within and till the space between the interior of the ferrule andv vents the iilling-piece s from moving laterally oftl the shank, and also prevents the ferrule from rocking, so that its projection can disengage. l

Instead of inserting a filling-piece between the projection of the ferrnle and the projec tion of the Shank, the parts of the wrench may be formed as represented in Figs. 5, 6, and 7. In this example, the projection fr of the shank Gis arranged close to the position of the projection e 01"' the j ferrule G, so that the latter bears against the former when the ferrule is rocked into its place after being applied to the shank. The disengagement of the projection of the ferrule is prevented, as in the other example, by the handle D.

In both of said examples the shank C is constructed smaller than thestem B, so as to form a shoulder, a, which prevents the ferrnle G 1. The combination of the ferrule of the ner that the handle, when in place, prevents screw-bearing of the wrench with the shank the disengagement of the said ferrule, substanof the fixed jew thereof by means of the protially as before set forth. jeot'ions formed, respectively, upon the interior In testimony whereof I have hereto set my of seid ferrule and upon the shank, substauhund this 4th day of February, A. D. 1869.

tially as before set forth. l LORING GOES.

2. The combina-tion of said ferrule of the Witnesses: screw-bearing, the shank, and the projections J. HENRY HILL,

with the handle of the Wrench, in such man J @HN W. WASHBURN. 

